CCNA Exploration 4.0. Network Fundamentals.

Chapter 5: OSI Network Layer

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5.1 IPv4

5.1.1 Network Layer - Communication from Host to Host

5.1.2 The IP v4 Protocol - Example Network Layer Protocol

5.1.3 The IP v4 Protocol - Connectionless

5.1.4 The IP v4 Protocol - Best Effort

5.1.5 The IP v4 Protocol - Media Independent

5.1.6 IP v4 Packet - Packaging the Transport Layer PDU

5.1.7 IP v4 Packet Header

5.2 Networks - Dividing Hosts into Groups

5.2.1 Networks - Separating Hosts into Common Groups

5.2.2 Why Separate Hosts Into Networks? - Performance

5.2.3 Why Separate Hosts Into Networks? - Security

5.2.4 Why Separate Hosts Into Networks? - Address Management

5.2.5 How Do We Separate Hosts Into Networks? - Hierarchical Addressing

5.2.6 Dividing the Networks - Networks from Networks

5.3 Routing - How Our Data Packets are Handled

5.3.1 Device Parameters - Supporting Communication Outside Our Network

5.3.2 IP Packets - Carrying Data End to End

5.3.3 A Gateway - The Way Out of Our Network

5.3.4 A Route - The Path to a Network

5.3.5 The Destination Network

5.3.6 The Next Hop - Where the Packet Goes Next

5.3.7 Packet Forwarding - Moving the Packet Toward its Destination

5.4 Routing Processes: How Routes are Learned

5.4.1 Routing Protocols - Sharing the Routes

5.4.2 Static Routing

5.4.3 Dynamic Routing

5.5 Labs

5.5.1 Lab - Examining a Device's Gateway

5.5.2 Lab - Examining a Route

5.6 Summary

5.6.1 Summary

5.7 Quiz

5.7.1 Chapter Quiz

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